extern void add_client_to_list(struct Client *cptr);
extern struct DLink *add_dlink(struct DLink **lpp, struct Client *cp);
extern void remove_dlink(struct DLink **lpp, struct DLink *lp);
extern void add_client_to_list(struct Client *cptr);
extern struct DLink *add_dlink(struct DLink **lpp, struct Client *cp);
extern void remove_dlink(struct DLink **lpp, struct DLink *lp);